TH350 direct drum band wobbles in goo - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-30-2008, 01:15 PM
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TH350 direct drum band wobbles in goo

I don't know transmissions at all and need some help determining my TH350 problems. I drove my car and noticed that the 1-2 shift was sloppy and was not sharp and snappy anymore, so I removed the pan. In the bottom of the pan was a layer of thick greyish goo. Next, I removed the valve body to clean and it had the same thick greyish goo in some of the channels. Then I reached up and noticed that I could move the band that goes around the direct drum. I could move the band 1/2" back and forth in a wobbly motion. Also, the kickdown was not attached.
1)Is the band supposed to move around? Could the band material be all the thick goo in the pan?
2)I never used the kickdown as I have 4.88's, does this need to be hooked up? How do I remove it permanently?
3)Should I search for another core to rebuild or just rebuild this trans?

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Old 07-30-2008, 03:45 PM
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Yes, the band should have some free play when it is not engaged. Less snappy shift into second and grey goo in the pan leads me to think the intermediate clutches are on the way out. The grey goo sounds like burnt clutch material and the shift is softer because there is now too much clearance in the clutch stack and the burnt clutches don't grab as well (just like a glazed manual clutch). The kickdown doesn't need to be hooked up, it can be removed and the hole plugged with a cup plug. Buying another trans isn't necessary at this point, rebuild what you have.
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Old 07-30-2008, 04:31 PM
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Quote:
Originally Posted by ericnova72
Yes, the band should have some free play when it is not engaged. Less snappy shift into second and grey goo in the pan leads me to think the intermediate clutches are on the way out. The grey goo sounds like burnt clutch material and the shift is softer because there is now too much clearance in the clutch stack and the burnt clutches don't grab as well (just like a glazed manual clutch). The kickdown doesn't need to be hooked up, it can be removed and the hole plugged with a cup plug. Buying another trans isn't necessary at this point, rebuild what you have.
Thanks eric!!!!!
Parts are on order as we speak!!!
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